High throughput second harmonic imaging for label-free biological applications.

Details

Serval ID
serval:BIB_DDE1B224B27E
Type
Article: article from journal or magazin.
Collection
Publications
Title
High throughput second harmonic imaging for label-free biological applications.
Journal
Optics express
Author(s)
Macias-Romero C., Didier M.E., Jourdain P., Marquet P., Magistretti P., Tarun O.B., Zubkovs V., Radenovic A., Roke S.
ISSN
1094-4087 (Electronic)
ISSN-L
1094-4087
Publication state
Published
Issued date
15/12/2014
Peer-reviewed
Oui
Volume
22
Number
25
Pages
31102-31112
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
Second harmonic generation (SHG) is inherently sensitive to the absence of spatial centrosymmetry, which can render it intrinsically sensitive to interfacial processes, chemical changes and electrochemical responses. Here, we seek to improve the imaging throughput of SHG microscopy by using a wide-field imaging scheme in combination with a medium-range repetition rate amplified near infrared femtosecond laser source and gated detection. The imaging throughput of this configuration is tested by measuring the optical image contrast for different image acquisition times of BaTiO₃ nanoparticles in two different wide-field setups and one commercial point-scanning configuration. We find that the second harmonic imaging throughput is improved by 2-3 orders of magnitude compared to point-scan imaging. Capitalizing on this result, we perform low fluence imaging of (parts of) living mammalian neurons in culture.
Keywords
Animals, Diagnostic Imaging/instrumentation, Lasers, Microscopy/methods
Pubmed
Web of science
Open Access
Yes
Create date
23/02/2015 12:10
Last modification date
27/02/2024 8:19
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